How to use proc transpose to transpose certain columns

[johnhuang12]

I have this data

Input

School Name	State	School Code	26/07/2009	02/08/2009	09/08/2009	16/08/2009
Northwest High	IL	14556	06	06	06	06
Georgia High	GA	147	05	05	05	06
Macy Hgh	TX	45456	NA	NA	NA	NA

The desired output is

School Name	State	School Code	Date	Absent
Northwest High	IL	14566	26/07/2009	6
Northwest High	IL	14556	02/08/2009	6
Northwest High	IL	14556	09/08/2009	6
Northwest High	IL	14556	16/08/2009	6
Georgia High	GA	147	26/07/2009	5
Georgia High	GA	147	02/08/2009	5
Georgia High	GA	147	09/08/2009	5
Georgia High	GA	147	16/08/2009	6
Macy Hgh	TX	45456	26/07/2009	NA
Macy Hgh	TX	45456	02/08/2009	NA
Macy Hgh	TX	45456	09/08/2009	NA
Macy Hgh	TX	45456	16/08/2009	NA

This is the code I have written

proc sort data-work.input;

by School_Name State School_Code;

run;

proc transpose data=work.input out=work.inputModified;

by by School_Name State School_Code;

run

But I don't get the desired output the dates are actual variables when imported into sas the become _26_07_2009. Note there are about 185 dates and they are actual variables.

Pls Help

[data_null__]

The variable _NAME_ will have the variable name and if your variables have labels _LABEL_ will have the the value of that label.  You can read _NAME_ using the INPUT function to create DATE.  _LABEL_ might contain a version of date that does not need to be translated.

17         data _null_;
18            _name_ = '_26_07_2009';
19            date = input(translate(_name_,' ','_'),ddmmyy11.);
20            format date date9.;
21            put _all_;
22            run;

_name_=_26_07_2009 date=26JUL2009 _ERROR_=0 _N_=1